CN201794631U - Air distribution phase adjusting device of engine - Google Patents
Air distribution phase adjusting device of engine Download PDFInfo
- Publication number
- CN201794631U CN201794631U CN2010202806734U CN201020280673U CN201794631U CN 201794631 U CN201794631 U CN 201794631U CN 2010202806734 U CN2010202806734 U CN 2010202806734U CN 201020280673 U CN201020280673 U CN 201020280673U CN 201794631 U CN201794631 U CN 201794631U
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- rotor
- engine
- oil
- stator
- adjusting device
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Abstract
The utility model relates to an air distribution phase adjusting device of an engine, which comprises a phase shifter and an engine oil control valve. The air distribution phase adjusting device is characterized by the inclusion of a rotor and a stator, wherein a blade is arranged on the rotor; a chain wheel or a belt pulley is arranged outside the stator; an oil cavity is arranged in the stator; the blade is placed in the oil cavity; an oil hole is formed in the rotor; the engine oil control valve comprises a plunger piston and a valve body; and an oil outlet on the valve body is connected with the oil hole of the rotor through a pipeline. The utility model has the benefits as follows: the higher torsion and the power index can be obtained at different rotating speeds of the engine, the stability during idling can be improved and the rotating speed during idling can be improved; the dilution control is improved to obtain better fuel economy at partial load; and the exhaust emission can be reduced.
Description
Affiliated technical field
The utility model relates to the Variable Valve Timing of motor car engine, and being specially adapted to car and automobile engine of light car port timing need be with the distribution device of engine operating condition variation.
Background technique
Engine operation must be introduced cylinder to inflammable mixture (or fresh air) through air inlet; To enter the inflammable mixture compression of cylinder then, light inflammable mixture when compressing near terminal point; Inflammable mixture fire burns, and the promotion piston stroking upward that expands is realized external work done; Discharge waste gas after burning at last.Motor constantly circulation repeats air inlet, compression, work done, exhaust, has just realized transformation of energy, and motor can be turned round continuously.
Engine valve actuating mechanism is according to the job order of motor and working procedure, utilize the thrust time opening of cam rotation generation and close intake valve and exhaust valve, make inflammable mixture or air enter cylinder, and waste gas is discharged in cylinder, realize gas exchange process.
Said mechanism has following shortcoming: cam is fixed on the camshaft, rotation phase is constant, the angle and the time that are inlet and outlet are fixed, can not regulate according to the engine speed needs: no matter be at the auto idle speed state, still at the state that bears a heavy burden and go up a slope, period of intake (air inflow) is constant, in order to take into account the power requirement of automobile, the fuel consumption of automobile is increased, lost Economy.
Summary of the invention
At the shortcoming of aforementioned mechanism, the utility model proposes a kind of engines distribution phase adjusting device to remedy the deficiency of prior art.
Can change the mechanism of port timing, purpose is by the Engine ECU control system, by OCV Oil Control Valve (OCV), change the flow direction of machine oil, the phase shifter (VVT) that is installed on the camshaft is rotated, realize the phase place of engine cam is regulated, thereby make valve opening, time of closing changes with motor and change in rotational speed, to improve charging efficiency, increase engine power.
The technological scheme that this mechanism adopts is: a kind of engines distribution phase adjusting device, comprise phase shifter and OCV Oil Control Valve, and it is characterized in that: phase shifter comprises rotor and stator, blade is arranged on the rotor, stator has sprocket wheel or belt wheel outward, has oil pocket, blade to be placed in the oil pocket in the stator; Oilhole is arranged in rotor; OCV Oil Control Valve comprises plunger and valve body, and the oil outlet on the valve body is connected in the oilhole of rotor by pipeline.
The beneficial effects of the utility model are:
1, under different engine speed, obtains higher moment of torsion and power index;
Phase shifter (VVT) is by the close moment of control intake valve, can optimize the torque characteristics of motor: when low engine speed, in compression stroke, angle, VVT control intake valve pass in evening, make it earlier closing, can reduce the incoming mixture of discharging intake valve, can make the more mixed gas of inspiration in the cylinder like this, produce higher low speed torque; When engine speed improved, the tuning effect of intake manifold needed intake valve to keep longer opening state sucking more gas, closed angle, peak output when improving high speed the evening that VVT can increase intake valve.
2, during engine start, VVT is locked at initial position, it also is the position that guarantees intake and exhaust overlapping angle minimum, this moment is because the valve overlap minimum, also just guaranteed to turn back to waste gas minimum the cylinder from exhaust valve, OCV Oil Control Valve (OCV) value is controlled within the target area, stability in the time of can improving idling and reduction idling speed;
3, when sub load, improve dilution control to obtain better fuel economy;
During engine idle, adjusting by VVT is controlled at minimum with the inlet and exhaust valve overlapping angle, stability when having improved idling, with respect to the motor of stationary phase, its idling speed of motor that VVT is installed can reduce about 50 rev/mins than the motor of stationary phase.The reduction of engine idle rotating speed also means the reduction of fuel consumption rate, thereby improves the fuel-economy type.
The method that improves fuel economy in motor middle and slow speed of revolution sub load commonly used is with the air inlet phase reach, increases valve overlap.At the end of exhaust stroke, intake valve is opened in advance, because the outlet pipe internal pressure is low, a part of waste gas is drained in the suction tude, and in aspirating stroke subsequently, this part waste gas enters into cylinder with air inlet.In addition owing to starting stage in aspirating stroke, some waste gas can pour in down a chimney from outlet pipe in the cylinder, and the residual gas amount in the cylinder obviously increases, and gas pressure is improved in the cylinder, therefore the pumping loss merit of aspirating stroke reduces, and fuel economy is improved.
4, adopt the alternative external exhaust gas recirculation of the VVT system (egr system) of intake and exhaust independent regulation, can reduce equivalent NO
xUnder the prerequisite of (nitrous oxide or nitrogen dioxide) discharging, have the potentiality that reduce the HC discharging simultaneously.
Because NO
xMainly at high temperature generate, control NO at present
xMain method dilute and enter the mixed gas that cylinder participate in to burn for draw back a part of waste gas from exhaust side, by diluting effect, in unburned mixture, add certain exhausted air quantity, waste gas is inertia, the combustible substance that only contains minute quantity has so just increased total thermal capacity of mixed gas.When thermal capacity improves, make the mixed gas that charges into be difficult to be heated, reduced the peak temperature of burning.Because NO
xGeneration directly relevant with combustion temperature, therefore, the charge dilution effect can reduce NO
xGeneration.
Because HC (hydrocarbon) waste gas that content is the highest reoxidizes when having sucked the exhaust stroke end again, so can also reduce the discharging of HC.Increasing overlapping angle needs the exhaust cam phase place to regulate backward, and exhauxt valve opens advance angle like this (EVO) reduces to have increased effective expansion ratio like this, has improved combustion efficiency, has further reduced the discharging of HC.
Description of drawings
Below by embodiment, and in conjunction with the accompanying drawings the utility model is further described:
Fig. 1 is the structural representation of the utility model embodiment phase shifter (VVT);
Fig. 2 is the side schematic view of Fig. 1;
Fig. 3 is the structural representation of OCV Oil Control Valve (OCV);
Fig. 4 is the schematic representation of stator;
Fig. 5 is the schematic representation of rotor;
Fig. 6 is the schematic representation at another visual angle of Fig. 5;
Fig. 7 is the schematic representation of OCV Oil Control Valve valve body;
Fig. 8 is the schematic representation of plunger.
Embodiment
Embodiment:
Rotor 6 is installed in the stator 5, and with the sealing of the oil pocket of stator 5, simultaneously, blade 18 stretches in the oil pocket, and each oil pocket is sealed the chamber 19 and retreat chamber 20 of becoming to advance; Oilhole 23 is arranged on the end face of rotor 6, and another is opened on rotor 6 sides oilhole 23, and and chamber 19 UNICOMs that advance, oilhole 24 is arranged on the other end of rotor 6, another is opened on rotor 6 sides oilhole 24, and and retreats chamber 20 UNICOMs.
Rotor 6 is installed in camshaft 1 end by key 21, and camshaft 1 is integral in succession by the intermediate hole and the rotor 6 of stator 5, rotates with camshaft 1.
Locking pin seat 11 of stator 5 end faces design, lock pin 12 is fixed on an initial position with stator 5 and rotor 6 on the rotor 6 under lock pin spring 13 effects.
At this moment, the sprocket wheel 25 on the stator 5 links to each other with bent axle by chain, makes stator 5 rotate, and the rotor 6 of stator 5 in driving it rotates, and rotor 6 drives camshaft 1 again and rotates, and valve is opened or closed to the cam rotation on the camshaft 1.
When the operating mode change, when needing to adjust phase place, process is as follows:
OCV Oil Control Valve (OCV) is a three-position four-way valve, under the control of Engine ECU, plunger 22 among the OCV can be controlled in a definite position, thereby further advance chamber 19 or retreat 20 machine oil and flow to and flow velocity of phase shifter (VVT) is led in control, thereby under the engine oil pressure effect, drive rotor 6 relative stator 5 and rotate to a specified position, close then and lead to the engine oil supplying that advances and retreat the chamber, make rotor remain on this position.Because rotor 6 is fixing with camshaft 1, stator 5 is fixed with the phase place of bent axle, therefore also just means camshaft 1 crankshaft rotating relatively, and keeps at a specified position, thereby changes the engines distribution phase place.
Concretely: workflow is as follows:
The machine oil import 3 of constant voltage is arranged on the valve body 2, and it is variant that the axial position of machine oil import 3 designs, and simultaneously, also has two groups of machine oil outlets on the valve body 2, and wherein one group is the engine oil supplying mouth 4 that advances, and the engine oil supplying mouth 4 that advances is connected in oilhole 23; Other one group for retreating engine oil supplying mouth 7, retreat engine oil supplying mouth 7 and be connected in oilhole 24.As for Placement, in the middle of practice, optimum is to make two pores on camshaft 1, and pressure machine oil reaches an end face of rotor 6 by one of them pore, gives oilhole 24 fuel feeding; Arrive the another one end face by the through hole in another one pore and the rotor 68, give oilhole 23 fuel feeding.
When being in lockup state, bulge loop 9 mediates, and machine oil import 3 is all sealed, the engine oil supplying mouth 4 and retreat engine oil supplying mouth 7 and all do not have pressure oil output of advancing, thus oilhole 23 and 24 does not all have oil-feed, and rotor 6 is with respect to stator 5 fixed-site.
When plunger 22 moves right, arriving stop, between the filler opening 3 that the position keeps left most and the left margin of bulge loop 9 slit is arranged, machine oil enters into advance engine oil supplying mouth 4 and outflow by this slit, enters into oilhole 23 by pore and through hole 8, enters the chamber 19 of advancing again.Lock pin 12 overcomes lock pin spring 13 spring forces under the engine oil pressure effect, lock pin 12 is lifted.Rotor 6 takes place to relatively rotate counterclockwise with stator 5 under the engine oil pressure effect, and camshaft and bent axle port timing are changed, and is turning to when being fit to the position, and plunger return is to lockup state, and oil circuit ends, and keeps this phase place.Form a new balance and continue transmission, drive connection is constant.
At this moment, camshaft 1 and bent axle just have a phase difference.
In like manner, when plunger 22 is moved to the left to stop, between filler opening of keeping right most in the position 3 and the edge, the right of bulge loop 9 slit is arranged, machine oil enters into by this slit and retreats engine oil supplying mouth 7 and outflow, enters into oilhole 24 by pore, enters the chamber 20 of advancing again.Rotor 6 takes place to relatively rotate clockwise with stator 5 under the engine oil pressure effect, and camshaft and bent axle port timing are changed, and is turning to when being fit to the position, and oil circuit ends, and keeps this phase place.Form a new balance and continue transmission,
The time of plunger 22 actions has in fact just determined phase place, thereby has realized continuous variable timing valve.
Claims (1)
1. an engines distribution phase adjusting device comprises phase shifter and OCV Oil Control Valve, it is characterized in that: phase shifter comprises rotor and stator, and blade is arranged on the rotor, and stator has sprocket wheel or belt wheel outward, has oil pocket, blade to be placed in the oil pocket in the stator; Oilhole is arranged in rotor; OCV Oil Control Valve comprises plunger and valve body, and the oil outlet on the valve body is connected in the oilhole of rotor by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202806734U CN201794631U (en) | 2010-08-04 | 2010-08-04 | Air distribution phase adjusting device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202806734U CN201794631U (en) | 2010-08-04 | 2010-08-04 | Air distribution phase adjusting device of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201794631U true CN201794631U (en) | 2011-04-13 |
Family
ID=43849546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202806734U Expired - Lifetime CN201794631U (en) | 2010-08-04 | 2010-08-04 | Air distribution phase adjusting device of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201794631U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386807A (en) * | 2014-09-03 | 2016-03-09 | 株式会社电装 | Valve timing controller |
| CN105927307A (en) * | 2016-04-03 | 2016-09-07 | 唐心昱 | Internal combustion engine variable valve timing mechanism with simple structure |
| CN108293316A (en) * | 2015-12-09 | 2018-07-17 | 雅马哈发动机株式会社 | Loader and element fixing apparatus |
| CN108361087A (en) * | 2018-01-04 | 2018-08-03 | 东风柳州汽车有限公司 | Turbocharged engine |
-
2010
- 2010-08-04 CN CN2010202806734U patent/CN201794631U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105386807A (en) * | 2014-09-03 | 2016-03-09 | 株式会社电装 | Valve timing controller |
| CN105386807B (en) * | 2014-09-03 | 2019-04-30 | 株式会社电装 | Valve timing controller |
| CN108293316A (en) * | 2015-12-09 | 2018-07-17 | 雅马哈发动机株式会社 | Loader and element fixing apparatus |
| US10555446B2 (en) | 2015-12-09 | 2020-02-04 | Yamaha Hatsudoki Kabushiki Kaisha | Feeder and component mounting device |
| CN108293316B (en) * | 2015-12-09 | 2020-04-17 | 雅马哈发动机株式会社 | Feeder and component mounting device |
| CN105927307A (en) * | 2016-04-03 | 2016-09-07 | 唐心昱 | Internal combustion engine variable valve timing mechanism with simple structure |
| CN108361087A (en) * | 2018-01-04 | 2018-08-03 | 东风柳州汽车有限公司 | Turbocharged engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110413 |
|
| CX01 | Expiry of patent term |